I am a full-time nanny for two toddlers, and I've been with this family for nearly two years - since before the younger child was born! We get along extremely well and I also babysit for other members of their family in my off hours. I make slightly above-average wage for my area, have pretty much dependable hours and flexible schedule, no chores or job creep, and get good bonuses on both the holidays and my birthday. This summer, I decided to go back to school, and the family supported me and altered their work schedules to facilitate my being able to attend night classes.
In January, I want to move in with a friend in a cheaper apartment, quit my job, and work part-time on campus, but I've never been at a job this long before, so just giving my two weeks seems rude. I'd like if possible to be available to help with interviewing and training the new nanny for at least a few days, but I can't afford to risk them deciding to replace me early or not giving me a holiday bonus because they know I'm leaving.
How much notice should I give? And is it polite to offer to help transition your replacement in, or is that more trouble than it's worth?